CN110789607A - Omnidirectional forward-moving type forklift front steering wheel steering mechanism - Google Patents
Omnidirectional forward-moving type forklift front steering wheel steering mechanism Download PDFInfo
- Publication number
- CN110789607A CN110789607A CN201910998656.XA CN201910998656A CN110789607A CN 110789607 A CN110789607 A CN 110789607A CN 201910998656 A CN201910998656 A CN 201910998656A CN 110789607 A CN110789607 A CN 110789607A
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- steering
- steering wheel
- reduction gearbox
- bevel gear
- transmission chain
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0421—Electric motor acting on or near steering gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/12—Steering gears mechanical of rack-and-pinion type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
- B62D5/0463—Controlling the motor calculating assisting torque from the motor based on driver input
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention discloses an omnidirectional forward-moving type forklift front steering wheel steering mechanism, wherein a transmission chain is movably arranged at the output end of a horizontal bevel gear reduction box, a front steering wheel fixing device is movably arranged in the transmission chain, a front steering wheel is fixedly arranged on the front steering wheel fixing device, and a steering motor, the horizontal bevel gear reduction box, the transmission chain, a photoelectric switch, a front steering wheel fixing device, a steering controller and a planetary reduction box are all arranged in the inner cavity of a body support leg. The invention provides a front steering wheel steering mechanism of an omnidirectional forward forklift, which overcomes the defects of low steering speed and precision and large abrasion to a steering wheel caused by the fact that the existing forklift is suitable for a hydraulic motor or an oil cylinder, and reduces the overall height of a body supporting leg through a related steering structure transversely arranged in an inner cavity of the body supporting leg, so that the minimum required height of forklift fork goods is reduced, and the effective height range of forking operation is effectively expanded.
Description
Technical Field
The invention relates to the technical field of storage and transportation forklifts, in particular to a front steering wheel steering mechanism of an omnidirectional forward moving type forklift.
Background
The development of domestic economy, the environment of little earth and gold, make the commodity circulation, the requirement of storage trade to factory space utilization is higher and higher, and then also higher and higher to fork truck dimensional parameter requirement, especially the fork truck of carrying long material, therefore the full forward type fork truck is suitable for transport and comes to the beginning, is used widely gradually, and the foreward directive wheel steering mechanism that this kind of fork truck carried out the mode of turning to abroad is hydraulic motor or hydro-cylinder, when carrying out this kind of action with hydraulic component, because of hydraulic oil has inertia in the in-process of moving, makes steering speed and precision lower, and also great to the wearing and tearing of directive wheel.
In the prior art, a three-fulcrum electric forklift steering mechanism with application number of '201821044910. X' structurally comprises an arm bracket and a traveling mechanism on a forklift body; this three-fulcrum electric fork truck steering mechanism utilizes manual rotation to turn to the angle scale, drive angle sensor, make angle sensor transmit angle rotation variable to the steering encoder through the signal line, the steering encoder drives the driving gear through control steering branch permanent-magnet machine, the change of direction is made to the wheel carrier of initiative walking directive wheel to driving gear engagement transmission driven disc gear, thereby intervene the work of walking alternating current motor drive initiative walking directive wheel, make the initiative walking directive wheel receive the drive power that turns to when walking, realize turning to the operation, so, it is nimble convenient to go, be favorable to operator's nimble operation, can deal with various service environment.
However, the method still has the obvious defects in the using process: 1. the steering structure in the device is only suitable for the three-fulcrum electric forklift, and the device has a single application range and is relatively limited; 2. the device mainly drives the other two fixed wheels to rotate through the operation of one steering wheel, the steering speed of the device is adjusted slowly, and the precision adjustment of the steering angle is poor; 3. the front wheels in the device are directional wheels, the rear wheels are steering wheels, and the turning radius is large, so that the device is difficult to adapt to steering in a narrow space.
Disclosure of Invention
The present invention is directed to a steering mechanism for a front steering wheel of an omni-directional forward type forklift to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
an omnidirectional forward-moving type steering mechanism for front steering wheel of forklift comprises
A photoelectric switch for detecting an initial position of the front steering wheel;
the steering wheel is used for controlling the steering of the front steering wheel in the traveling process;
an absolute value encoder for converting a steering signal of a steering wheel into an electric signal;
the main controller is used for receiving the electric signals sent by the photoelectric switch and the absolute value encoder;
the main controller sends an electric signal to the steering controller, the steering controller controls the number of steering turns of the steering motor through the steering main controller, the steering motor is transversely arranged, a planetary reduction gearbox is arranged at the output end of the steering motor, the planetary reduction gearbox is meshed with the horizontal bevel gear reduction gearbox, a transmission chain is movably arranged at the output end of the horizontal bevel gear reduction gearbox, a front steering wheel fixing device is movably arranged in the transmission chain and used for transmitting torque, a front steering wheel is fixedly arranged on the front steering wheel fixing device, and the steering motor, the horizontal bevel gear reduction gearbox, the transmission chain, the photoelectric switch, the front steering wheel fixing device, the steering controller and the planetary reduction gearbox are all arranged in an inner cavity of a landing leg of a vehicle body.
Preferably, the output end of the steering motor is directly connected to the horizontal bevel gear reduction box without the planetary reduction box.
Preferably, the horizontal bevel gear reduction box is replaced by a vertical reduction box, the vertical reduction box is arranged in an inner cavity of the landing leg of the vehicle body, and a transmission chain is movably arranged at the output end of the vertical reduction box.
Preferably, the steering motor is vertically arranged in an inner cavity of the vehicle body supporting leg.
Compared with the prior art, the invention has the beneficial effects that:
1. the steering mechanism of the existing forklift for executing the steering mode is mostly a hydraulic motor or an oil cylinder, but a hydraulic element is used for executing the action, and as the hydraulic oil has inertia in the moving process, the steering speed and the steering precision are lower, and the abrasion to a steering wheel is also larger, the invention abandons the related structures of the hydraulic motor and the oil cylinder, avoids the defects of the prior art, and improves the reliability and the control precision of the steering mechanism;
2. the horizontal gear reduction box and other related structures in the device are transversely arranged in the inner cavity of the body supporting leg, so that the overall height of the body supporting leg is obviously reduced compared with the traditional arrangement, the minimum required height of fork truck fork goods is reduced, the effective height range of fork taking operation is expanded, and the adaptability of the working condition of the fork truck is improved;
3. according to different use environments and working requirements, the device provides various specific embodiments, the horizontal bevel gear reduction box can be replaced by a vertical reduction box, the process of the vertical reduction box is simpler, the cost is low, the device is suitable for the condition that the minimum required height for fork truck goods forking is not strictly required, and a user can conveniently select the device according to the actual condition;
4. the steering mechanism has wider application range, and can be used for other suitable vehicle bodies such as a three-fulcrum forklift system and a four-fulcrum forklift system;
5. the steering mechanism provided by the invention is suitable for omnidirectional vehicles, namely forklift systems with front and rear wheels of the forklift participating in steering, is mainly used for the front steering wheels, has small turning radius, can improve the steering precision, and enables the forklift to react on steering adjustment more swiftly.
The invention provides a front steering wheel steering mechanism of an omnidirectional forward forklift, which overcomes the defects of low steering speed and precision and large abrasion to a steering wheel caused by the fact that the existing forklift is suitable for a hydraulic motor or an oil cylinder, and reduces the overall height of a body supporting leg through a related steering structure transversely arranged in an inner cavity of the body supporting leg, so that the minimum required height of forklift fork goods is reduced, and the effective height range of forking operation is effectively expanded.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a third embodiment of the present invention;
FIG. 4 is a diagram illustrating a fourth embodiment of the present invention;
FIG. 5 is a schematic view of the steering motor and planetary reduction gearbox of the present invention, shown disassembled;
fig. 6 is an electrical connection schematic of the present invention.
In the figure: the device comprises a steering motor 1, a horizontal bevel gear reduction box 2, a transmission chain 3, a photoelectric switch 4, a front steering wheel fixing device 5, a front steering wheel 6, a vertical reduction box 7, a steering controller 8, a planetary reduction box 9, a main controller 10, a steering wheel 11, an absolute value encoder 12, a steering main controller 13 and a vehicle body supporting leg 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution:
an omnidirectional forward-moving type steering mechanism for front steering wheel of forklift comprises
A photoelectric switch 4 for detecting an initial position of the front steering wheel 6;
a steering wheel 11 for controlling steering of the front steering wheel 6 during travel;
an absolute value encoder 12 for converting a steering signal of the steering wheel 11 into an electric signal;
and a main controller 10 for receiving the electrical signals sent by the photoelectric switch 4 and the absolute value encoder 12;
the main controller 10 sends an electric signal to the steering controller 8, the steering controller 8 controls the number of steering turns of the steering motor 1 through the steering main controller 13, the steering motor 1 is transversely arranged, the output end of the steering motor 1 is provided with a planetary reduction gearbox 9, the steering motor 1 rotates to drive the planetary reduction gearbox 9 to perform gear transmission, the planetary reduction gearbox 9 is meshed with the horizontal bevel gear reduction gearbox 2 to transmit torque to the horizontal bevel gear reduction gearbox 2, the output end of the horizontal bevel gear reduction gearbox 2 is movably provided with a transmission chain 3, the transmission chain 3 rotates along with the transmission chain, a front steering wheel fixing device 5 is movably arranged in the transmission chain 3 and used for transmitting torque, a front steering wheel 6 is fixedly arranged on the front steering wheel fixing device 5, the front steering motor 1, the horizontal bevel gear reduction gearbox 2 and the front steering wheel fixing device 5 drive the front steering wheel 6 to steer, The transmission chain 3, the photoelectric switch 4, the front steering wheel fixing device 5, the steering controller 8 and the planetary reduction gearbox 9 are all arranged in the inner cavity of the body supporting leg 14, and because the steering motor 1, the horizontal bevel gear reduction gearbox 2 and other related structures are transversely arranged in the inner cavity of the body supporting leg 14, the overall height of the body supporting leg 14 can be obviously reduced, so that the minimum required height of forklift forking is reduced, the effective height range of forking operation is expanded, and the adaptability of the working condition of the forklift is improved.
Preferably, the planetary reduction gearbox 9 is not included, the output end of the steering motor 1 is directly connected with the horizontal bevel gear reduction gearbox 2, the arrangement can simplify the steering mechanism, and the device can be suitable for an operating environment with low speed regulation requirement precision.
Preferably, the horizontal bevel gear reduction box 2 is replaced by a vertical reduction box 7, the vertical reduction box 7 is arranged in an inner cavity of the body supporting leg 14, the output end of the vertical reduction box 7 is movably provided with the transmission chain 3, and the vertical reduction box 7 cannot help to reduce the overall height H of the body supporting leg 14, but the vertical reduction box 7 is simple in processing technology, high in reliability and low in cost, is suitable for the situation that the minimum required height for fork truck forking is not strictly required, and is convenient for a user to select according to actual conditions.
As one preference, the steering motor 1 is disposed upright in the cavity of the body leg 14.
The first embodiment is as follows: firstly, detecting the initial position of a front steering wheel 6 through a photoelectric switch 4, sending information to a main controller 10 as an initial value, then controlling the steering of the front steering wheel 6 through a steering wheel 11 according to the moving position requirement of the forklift, converting a steering signal of the steering wheel 11 into an electric signal through an absolute value encoder 12, sending the electric signal to the main controller 10, sending the received and converted electric signal to a steering controller 8 through the main controller 10, controlling the number of steering turns of a steering motor 1 through a steering main controller 13 by the steering controller 8, transversely arranging the steering motor 1, reducing the overall height H of a vehicle body supporting leg 14, arranging a planetary reduction gearbox 9 at the output end of the steering motor 1, driving the planetary reduction gearbox 9 to generate gear transmission, meshing the planetary reduction gearbox 9 with a horizontal bevel gear reduction gearbox 2, transmitting torque to the horizontal bevel gear reduction gearbox 2, the output end of the horizontal bevel gear reduction box 2 is movably provided with a transmission chain 3, the transmission chain 3 operates along with the transmission chain, a front steering wheel fixing device 5 is movably arranged in the transmission chain 3 and used for transmitting torque, a front steering wheel 6 is fixedly arranged on the front steering wheel fixing device 5, the front steering wheel fixing device 5 drives the front steering wheel 6 to steer, a steering motor 1, the horizontal bevel gear reduction box 2, the transmission chain 3, a photoelectric switch 4, the front steering wheel fixing device 5, a steering controller 8 and a planetary reduction box 9 are all arranged in the inner cavity of the vehicle body supporting leg 14, and because the steering motor 1, the horizontal bevel gear reduction box 2 and other related structures are transversely arranged in the inner cavity of the vehicle body supporting leg 14, the overall height H of the vehicle body supporting leg 14 can be obviously reduced under the structural combination, so that the minimum required height of forklift fork goods is reduced, the height range of the forking operation is enlarged, and the adaptability of the working condition of the forklift is effectively improved.
Example two: the operation process is similar to that of the first embodiment, the only difference is that the planetary reduction gearbox 9 is not included in the first embodiment, the output end of the steering motor 1 is directly connected to the horizontal bevel gear reduction gearbox 2, the reduction ratio is changed accordingly, so that the requirement of the steering motor 1 on starting torque is met, the reaction precision of the forklift to the speed reduction operation is slightly reduced due to the arrangement, but the steering mechanism can be simplified, and the first embodiment can be suitable for an operation environment with low speed regulation requirement precision.
Example three: firstly, detecting the initial position of a front steering wheel 6 through a photoelectric switch 4, sending information to a main controller 10 as an initial value, then controlling the steering of the front steering wheel 6 through a steering wheel 11 according to the moving position requirement of the forklift, converting a steering signal of the steering wheel 11 into an electric signal through an absolute value encoder 12, sending the electric signal to the main controller 10, sending the received and converted electric signal to a steering controller 8 through the main controller 10, controlling the number of turns of a steering motor 1 through a steering main controller 13 by the steering controller 8, transversely arranging the steering motor 1, reducing the overall height of a landing leg 14 of the forklift body, arranging a planetary reduction gearbox 9 at the output end of the steering motor 1, driving the planetary reduction gearbox 9 to generate gear transmission through the steering motor 1, meshing the planetary reduction gearbox 9 with a vertical reduction gearbox 7, and transmitting torque to the vertical reduction gearbox 7, the output end of the vertical reduction gearbox 7 is movably provided with the transmission chain 3, the transmission chain 3 operates along with the transmission chain, the transmission chain 3 is movably provided with the front steering wheel fixing device 5 for driving the front steering wheel 6 to steer, and the difference from the embodiment is that the horizontal bevel gear reduction gearbox 2 is replaced by the vertical reduction gearbox 7, although the overall height H of the body supporting legs 14 cannot be reduced due to the arrangement of the vertical reduction gearbox 7, the vertical reduction gearbox 7 is simple in processing technology, high in reliability and low in cost, and is suitable for the situation that the minimum required height for forklift fork goods does not have strict requirements.
Example four: the operation process is similar to that of the embodiment, the only difference is that the planetary reduction gearbox 9 is not included in the embodiment, the output end of the steering motor 1 is directly connected to the vertical reduction gearbox 7, the reduction ratio is changed along with the change of the reduction ratio to meet the requirement of the starting torque of the steering motor 1, the height of the support legs 14 of the forklift body cannot be reduced in the embodiment, but the vertical reduction gearbox 7 is simple to machine and lower in cost, the installation of the planetary reduction gearbox 9 is omitted, the structure can be simplified, the embodiment is suitable for the condition that the minimum required height of forklift fork goods is not strictly required, the steering precision of the forklift is not precisely required, common use places can be met, and the overall cost is lower.
In summary, the present invention provides four embodiments, so that a user can select a suitable steering structure to assemble according to different use locations and different cost advance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a steering mechanism of steering wheel before antedisplacement formula fork of qxcomm technology which characterized in that: comprises that
A photoelectric switch (4) for detecting an initial position of the front steering wheel (6);
a steering wheel (11) for controlling the steering of the front steering wheel (6) during travel;
an absolute value encoder (12) for converting a steering signal of a steering wheel (11) into an electric signal; and
the main controller (10) is used for receiving the electric signals sent by the photoelectric switch (4) and the absolute value encoder (12);
wherein: the main controller (10) sends an electric signal to the steering controller (8), the steering controller (8) controls the number of steering turns of the steering motor (1) through the steering main controller (13), the steering motor (1) is transversely arranged, a planetary reduction gearbox (9) is arranged at the output end of the steering motor (1), the planetary reduction gearbox (9) is meshed with the horizontal bevel gear reduction gearbox (2), a transmission chain (3) is movably arranged at the output end of the horizontal bevel gear reduction gearbox (2), a front steering wheel fixing device (5) is movably arranged in the transmission chain (3) and used for transmitting torque, a front steering wheel (6) is fixedly arranged on the front steering wheel fixing device (5), and the steering motor (1), the horizontal bevel gear reduction gearbox (2), the transmission chain (3), a photoelectric switch (4), The front steering wheel fixing device (5), the steering controller (8) and the planetary reduction gearbox (9) are all arranged in the inner cavity of the support leg (14) of the vehicle body.
2. The omni-directionally forward forklift steering wheel steering mechanism of claim 1, wherein: the output end of the steering motor (1) is directly connected to the horizontal bevel gear reduction box (2) without the planetary reduction box (9).
3. The steering mechanism for the omni-directional front fork truck according to claim 1 or 2, wherein: the horizontal bevel gear reduction gearbox (2) is replaced by a vertical reduction gearbox (7), the vertical reduction gearbox (7) is arranged in an inner cavity of a vehicle body supporting leg (14), and a transmission chain (3) is movably arranged at an output end of the vertical reduction gearbox (7).
4. The omni-directionally forward forklift steering wheel steering mechanism of claim 3, wherein: the steering motor (1) is vertically arranged in an inner cavity of a vehicle body supporting leg (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910998656.XA CN110789607A (en) | 2019-10-21 | 2019-10-21 | Omnidirectional forward-moving type forklift front steering wheel steering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910998656.XA CN110789607A (en) | 2019-10-21 | 2019-10-21 | Omnidirectional forward-moving type forklift front steering wheel steering mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN110789607A true CN110789607A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910998656.XA Pending CN110789607A (en) | 2019-10-21 | 2019-10-21 | Omnidirectional forward-moving type forklift front steering wheel steering mechanism |
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| CN (1) | CN110789607A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5325935A (en) * | 1993-05-18 | 1994-07-05 | Nippon Yusoki Co., Ltd. | Reach forklift |
| EP1008508A2 (en) * | 1998-12-11 | 2000-06-14 | FIAT OM CARRELLI ELEVATORI S.p.A. | Steering system for an industrial truck |
| US20130030656A1 (en) * | 2010-04-16 | 2013-01-31 | Hubtex Maschinenbau Gmbh & Co. Kg | Steering method and steering system for an industrial truck |
| CN204586352U (en) * | 2015-04-16 | 2015-08-26 | 宋学超 | A kind of Novel 90 degrees corner wheel |
| CN208126274U (en) * | 2018-03-05 | 2018-11-20 | 上海嘉绍信息技术有限公司 | A kind of computer host box with adjusting height function |
| CN108972532A (en) * | 2018-08-03 | 2018-12-11 | 南京中高知识产权股份有限公司 | A kind of high precision machines arm principal arm steering deceleration control system |
| US20190308860A1 (en) * | 2016-07-26 | 2019-10-10 | Bulmor Holding Gmbh | Vehicle having a lateral lifting device |
-
2019
- 2019-10-21 CN CN201910998656.XA patent/CN110789607A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5325935A (en) * | 1993-05-18 | 1994-07-05 | Nippon Yusoki Co., Ltd. | Reach forklift |
| EP1008508A2 (en) * | 1998-12-11 | 2000-06-14 | FIAT OM CARRELLI ELEVATORI S.p.A. | Steering system for an industrial truck |
| US20130030656A1 (en) * | 2010-04-16 | 2013-01-31 | Hubtex Maschinenbau Gmbh & Co. Kg | Steering method and steering system for an industrial truck |
| CN204586352U (en) * | 2015-04-16 | 2015-08-26 | 宋学超 | A kind of Novel 90 degrees corner wheel |
| US20190308860A1 (en) * | 2016-07-26 | 2019-10-10 | Bulmor Holding Gmbh | Vehicle having a lateral lifting device |
| CN208126274U (en) * | 2018-03-05 | 2018-11-20 | 上海嘉绍信息技术有限公司 | A kind of computer host box with adjusting height function |
| CN108972532A (en) * | 2018-08-03 | 2018-12-11 | 南京中高知识产权股份有限公司 | A kind of high precision machines arm principal arm steering deceleration control system |
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Application publication date: 20200214 |
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